Coffee-chaff extractor.



E. T. WEAR. COFFEE GHAFF EXTRACTOB.

APPLICATION TILED APR. 6, 1909.

Patented May 3, 1910.

2 SHEETS-SHEET 2.

ATTORNEY tractors, of

UNITED PATENT ()FFICE.

EDGAR T. WEZsR. 0E OAK-EARL. CALIFORNIA. ASSIGNOR, BY MESH ASSIGN'HENTS,OI

ONE-HAL)? TC- FRANK F. WEAR, OF SAN FRANCISCO, CALIFORNIA.

oormn-onnrr nxrnsoronf Specification o! Lcztcrs Yatent.

Patented May 3, 1910.

Aoplicriiion filcii April 6, 1909. Serial No. 488.124.

To all whom it may concern:

zcnyof the Unitcd State-s. rcsiiling at (lukliind, in thov county ofAlmuedu and State of California, have invented corn n now and usefulImprovements in Coflro-(Jhstl' llxtioulsi-rtionzil view of the same.Figs. 8 and which the following is a specification, reference being hadtherein to the accompanying drawing.

This invention relates to separators for grinding machines and hasparticularly in View a device of the character specified in which chniiand other light, foreign material mav be separated from the groundmaterial and conveyed to a receptacle.

In carrying out the generally stated objectof the invention it iscontemplated cm ploying a suction device which may be opof. Fig. 5 aview in front elevation of the ports of said figure hcin broken away.Fig. *2 is a detail elevation 0 tbs hopper curried or tho suction pipe.Fig. 7 is-a broken ver- 11 arc detailhorizontal and vertical sectionalviews of the suction pipe showing a draft regulator curried thereby.

Referring to the accompanying drawings by numerals 1 designntcs asuction pipe, one r-nd of which is in communication with a F suctiondevice .3 which may be a fan which operated by a gear 3 held in meshwith a large gear 4 which in turn is operated by 8. small gear 5 mountedupon a motor shaft 6.

- The large gear '1 and small gear 5 are inerated by the grindingmachine and pro- Z vided wit. a suction pipe having one and providedwith :1 hoppcr through which tln' pro'ectiiw from. the fan casin 9.

gmundinntcrial passes from the grinding machine so that the force of thosuction do- 5 vice is exerted dusctly thereon to cpnruto the forcignmaterial thaw-(from and convey l engages with o lulu (XivHSlOn P2 of onopen the same through said pipcand o din-burg:

pipe to a scrroning device in which rho :rir I ln connection with Lhcforcgoiug. tho inprcvcnts tho Xlltll'filitll iron: the grinding vcniionnlso contcznplutcs employing suiiublc draft regulating devices foruotlirulling the force of the suotion. and also rllllfllllr" i =nmy bein the form of an elbow and is out-oil from operating upon the man-rialprovided with a slide \ulvo l6, and intermeniale said slide valve andtho sn.-ti0n device,

cut-oil devices whereby the s purntor mu c being delivercd from thegrinding innchinc.

closed in a housing or gear (using 7, and the gear 3 is'houscd in onoutstanding casing Said fun cusingumy he supported by a bracket 10carried by the base of a grinding inailllle. The said suction pipe 1 hasits inlet end provided with n pipe coupling 11 whioh iznliublc fusionor14. Said hopper '13 is In will be h'lilfirsluml. of course that theessential featurs of the invention necessary in the practicalapplication of the sopurntor are susceptible of a wide range of detailsj brought into nhnemcnt. \viin the opening 17 and structuralorrangomr-ms. but one profcrr'e i and practical cmhodinwnt of the snowprovided with an upstanding lip 15- which it is provided with an opening17 which may no rovcrcd or uncovercd by means of a rota- :nblo sleeve.1-? surrounding said pipe and provided with an opening 19 WlllCh whenThe slide vulva 16 serves to oui-ofi' the force in the suction devicefrom the hoppcr 13 top plan view of thr receptacle into which I lhcseparated materiul is (lQilvQYWl, showing E the manor-r of connectingthe some with the v winding mill and also showing an uir dc l clingsci-con n'nmntcd thzrein. Fig. l i

that whr-i: material is being pulverized by tho grinding machine, thesome will not be acted upon by said suction.

The pipe 1 enters the. central portion of he fun casing 9 and deliversthe material heroin whcreit is acted upon by the force oi'suid fun andforced out through a. discharge pipe. 20 and into a hopper-shim d finemosh screen 21 fitted over the siren s! open end of a glass receptacle22. Soul receptacle .22 has a circular scre .33 suspended therein bymeans of hol ing clips 24. The screen .223 is provided with a pluralityof semi-spherical lugs 25 which are scattered about its upper surfaceand serve to divide the air current and therehy hrcalc its force andalso to deflect the said air to and through the hopper-shaped screen 511tac e and thus agitate the material therein.

The rcccptacie '22 ma be held in cngagement with the base of tiegrinding machine by means of the holding clips 26 which are formed ofspring metal and embrace its base. as is clearly shown in Figs. 1 and 3.

The 0 eration of the separator is as foll0ws:- he suction fan beingoperated by the motor throu h the described gearing, a

strong suction will be created in the pipe 1 which acts upon thematerial falling from the discharge outlet of the grinding machine intothe hopper of the said'pipe, thereby separating the light foreignparticles therefrom and conveying; the same through said pipe and intothe hopper-shaped screen 21, the mesh of which is fine enough to preventany of the. material escaping therefrom, but ermits considerable of theair to escape. mm the hopper-shaped screen, the material falls upon the.screen 23 and falls through the same and into the receptacle 2). the airwhich has not escaped thron h the hopper-shaped screen being deflected ythe lugs of said screen 23, as has been previously ex lained.

As he been stated before, the rope tacle is of glass so that thecontents thereo may be visible to permit. the attendant. to see when it.is necessary to empty the same and. also to ins ect the contents.

It, will as seen from the foregoing that the described separator ma bereadily applied to the discharge en of a grinding machine so that itsforce of suction may be a plied directly to the material beingdisciarged, and thus effectively separate the forei 'n materialtherefrom. And it will also he seen that through the interposed cut-01f'Jalve in the suction pipe, the separator may be prevented from actingon the material being discharged, so thatwhcn material is beingpulverized it will not be drawn through the suction pipe, and throughthe medium of the described draft regulator thejcree of suc ion mav"beincreased or diminished.

lVhat I claim as my invention is:-

1. A device of the character described comprising 8."Stlcti0l1 pipeadapted for detachablc. connection with an outlet of a grinding-machine,a discharge pipe receivmg the material from the suction pipe, 11hopper-shaped scren into which said discharge pipc delivers and whichpermits the to prevent. the same passing into the recepcameo air toescape, a receptacle in communication with said screen, and a screencarried lry said receptacle and provided with aindefleeting means.

2. A device of" the character described i comprising a suction pipeadapted for detachable connection with an outlet of a grinding machine,a discharge pipe Commitnicating with said suction pipe, a screen intowhich said discharge pipe delivers, a rece' tacle in communication withsaid screen, and a screen mounted in said receptacle and provided withair dcllcctors.

3. A device of the character described comprising a suction pipe adaptedfor detachable engagement with an outlet of a grinding machine, meansfor creating a suction in said pipe, a discharge pipe in communicationwith the suction pipe a screen P connected to said discharge pipe whichpermits escape of air, a receptacle also connected with said screen, anda second screen carried by said receptacle and provided with airdeflectors.

4. A device of the character described comprising a. suction pipeadapted for connection with a discharge outlet of a grinding machine,means for creating a suction therein a discharge pipe in communicationwith the suction. pi e, a hopper-shaped screen having one en connectedwith said discharge pipe, 8. receptacle'having its upper end surroundedby said hopper-shaped screen, and a screen suspended within saidreceptacle and provided with air deflectors.

5. A device of the character described comprising a suction ipe, adaptedfor engagement with an ou cf. of a grinding machine, means for creatinga suction therein,

suction pipe, a receptacle, a screening connection between saiddischarge pipe and said receptacle, and a second-screen suspended withinsaid receptacle.

6. A device of the character described. comprising a suction 1pipeadapted for engagement with an out ct of a grinding machine, means forcreating a suction therein, a discharge pipe in conununication with thesuction pipe, a receptacle, a screening connection between saiddischarge pipe and said receptacle, and a second screen suspended withinsaid receptacle and providedwith a plurality of air deflectors.

7. A device of the character described comprising a suction ipe adaptedfor engagement with an out st of a grinding inachme, means for creatinga. suction therein, a discharge pipe in communication with the suction1pc, a receptacle a screcnin conncction etween said reoe role and saiddis charge pipe for permittng air to escape, fund a second screensuspended within said receptacle and rovided with a plurality of lugsfor deflecting air from said receptacle.

a discharge pipe in communication with the' i comprising a suction pipeadapted for 011- I ce tacie.

11 discharge pipe in communication with the receptacle connected withssi screen, and

omiao a 8. A device of the character described an air deflecting screencarried by said re- 11 testinlony whereof I hereunto aflizi my signature1:1 presence of iwo witnesses.

\ EDGAR T. WEAR.

gagclncnt with an outlet of a grinding lna- Q I chine, means 101creating a suction therein,

Witnesses:

HrC. Scnnonmm, F. P. SCHROEDEB.

suction pipe, :1 screen carried by said discharge pipe and being of a hoper shape, a

